This is a Hot Racing Monster Blower motor heat sink fan with mount for the Traxxas X-Maxx.
This blue motor Mount has a monster blower fan
Wired to take power from your main battery without losing power for the servo and receiver.
Voltage: 7.4 to 11.1
Length: 50mm width: 50mm
Fan Height: 10mm
1x Motor Heat Sink Mount Assembly with Attached Fan and Connector